This place is amazing with an incredible view of the river. Very accurate to the photos, and the pool area is spectacular to relax at. Checking in/out is a breeze, won't have any troubles there. This place is great if you want to be close to all the things to do in central Bangkok. If you'll be taking the train, their private ferry service to the nearest station is very helpful.
Can't go wrong with booking your stay here! Enjoy.